Geobge l



(No Model.) I

G. L. K. MORROW.

MOWING MAGHINE.

No. 339,997. Patented Apr. 13, 1886.

WITNESSES IJV V'EJV' TOR Q .dttorney GEORGE L. K. MORRO\V, OF DETROIT, MICHIGAN, ASSIGNORTO DEXTER M.

- FERRY, OF SAME PLACE.

MOWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 339,997, dated April 13,1886.

Application filed January 29, 1886. Serial No. 100,206. (No model.)

To all whom, it may concern.-

Be it known that I, GEORGE L. K. MOR- ROW, of Detroit, county of lV-ayne, State of Michigan, have invented anew and useful Improvement in 1Iowing-Machines; and I declare the folowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference'being had to the accompanying drawings, which form a part of this specification.

My invention consists of the combination of devices and appliances hereinafter specified, and more particularlypointed out in the claims.

My invention relates more particularly to the pitinan-connection between the revolving head at the lower end of the radial arm of a mowing-machine or harvester and the cutter bar. it is well known that by reason of the plane of rotation of the said revolving head being inclined to the plane in which the cutter is caused to move there is necessitated a universal movement of the extremities of the conneeting-pitma-n.

This invention consists of a novel construction of said connections.

In the drawings, Figure l is a view in section illustrating my invention. Fig. 2 is a face View of the upper surface of the rotary h ead,illustrating how the nut is locked in position.

A represents the lower end of the drivingshaft contained within or supported by the radial arm of a mowing-machine or harvester, and by which motion is communicated from the axle of the machine to the cutter-bar.

B is the rotary head at the lower extremity of said arm.

Ois the heel of the cutterbar or part to which power is applied to reciprocate said bar.

D is the connecting-pitman. This pitman, at the end adjacent to the cutter-bar, is finished in globular form, as shown at d, and has through it a double conical opening, d, as shown, through which is passed a plain round bolt, (1, this bolt being preferably provided with an angular head countersunk into a correspondingly-shaped recess, while at the other end it is provided with a nut, (1 and I prefer,

also, to provide the bolt with athrough-opening at its threaded end for the reception of a spring-cotter, d, for locking the nut against running off from the bolt The boxing for the reception of the spherical end of the pitman is as indicated at O and 5 O likewise of corresponding spherical form within, and are preferably secured in place upon the said spherical head and to the heel of the cutter-bar by the same bolt, (2, although this particular method of securing the boxing to the bar and the parts of the boxing to each other is not absolutely essential. At the other end of the pitman,adjacent to the rotary head B, I shape the pitinan into hollow spherical form, as shown at D, passingthrough the same from the inside a bolt, D having the under surface of its head shaped in corresponding spherical form, the spherical end of the pitman having an enlarged opening, D for the passage of the bolt, so as to admit of the requisite play when the device is in operation. The said bolt D is squared along that portion which passes through the rotary heads, and

adapted to lit a corresponding opening,so as to be held from turning. the bolt is provided a nut, and the said not has any suitable means for looking it upon the bolt. The means I prefer to employ for this purpose is to make the bolt with a projecting annular flange, D", which is provided with ratchets on its under face, and a spring-pawl, D engages the said ratchet and prevents the nut from turning. This device is very well adapted for the purpose, since any wear upon the spherical surfaces, either of the rotary head, the pitman, or the bolt itself, may be readily compensated for by taking a slight turn on the nut and looking it in its new position.

I have found that a pitman constructed and connected at its extremities in the manner shown operates with perfect freedom and accomplishes the required purpose in a more perfect manner than the same has been ac complished by devices heretofore employed for a like purpose. The nut d at the end of the bolt (2 is preferably provided with radial grooves in its uppersurface, so that when the nut is turned down for the purpose of tightening up to compensate for wear on the spherical ball and boxing it may be locked in any desired position by the spring-cotter, which passes through the bolt and rests within the At the other end of combination, with the cutter-bar and inclined rotary head for giving mot'ion to the same, of a pitman formed at the cutter-head end into a spherical ball housed in spherical boxing, the whole secured together by a bolt, (1, said pitman at its otherend shapedintoahollowheng ispherical head seated within a corresponding cavity in the rotary head. and the whole 'secured by a square stem-bolt, D. with the under surface of its head spherically shaped and adapted to wear against the inner surface of said hemispherical end of the pitman, substantially as described.

2. As a means for connecting a pitma'n, D, with the cutter-bar of a mower or reaper, a spherical ball, d, provided with double conical openings,boxing composed of thetwo parts 0 G", the lower part connected to the cutterbar, and both pal ts provided with corresponding spherical-shaped bearings for the ball, and a central bolt passing through said boxing and bill, substantially as described.

- 3. The combination, with the pitman D, of the spherical ball atits end, with a double conical opening, boxing composed of two parts,

0 0 the lower part connected to the cutterbar, and both partsprovided with correspondheel of the cutter-bar,"the boxing, and the ball, and provided with a nut at its upper end, said nut capable of adjustment to compensate for wear upon the boxing and ball, substantially as described.

4. The combination, with'the pitman D and head at'the end of the pitman, a corresponding recess in the rotary head, a square stembolt provided with spherical-shaped bearings beneath its head, and a nut for holding the parts in place, substantially as'desc'ribed.

5. The combination, with the pitman D and the rotary head B, of the hemisphericalend of said nut adapted to be adjusted to any desired .degree and locked in any position, substantially as described.

end of the pitman formed with the enlarged slots D the rotary head, and squarestembolt D, the nut provided with a ratchet-face and springpawl, substantially as andfor th purpose described.

In testimony whereof I sign this specification in the presence of two witnesses,

, GEORGE L. K. MORRQ'W.

Witnesses:

N. S; WRIGHT,

M. B. ODoGHEB'rY.

the rotary head B, of a hollow hemispherical.

m becriugspand ab'olt passing through the the pitman, the bolt D, and nut at its end,

6. The combination, with the hemispherical 

